X users on the platform formerly known as Twitter report that the Highlights feature disappeared following a mobile app redesign. The option is now concealed under a Posts dropdown menu, according to multiple replies in the thread. One AI researcher expressed frustration over lost discoverability for project threads, drawings, blog posts, and pinned history, noting previous plans to migrate content were abandoned due to bugs. Another user called the change a concerning sign and advised sticking to standard tweets. The cluster reflects ongoing complaints about reduced visibility for curated content and the absence of viable alternatives. No official confirmation or reversal is mentioned in the provided sources.